208 sq ft
Ask us about this size
Below our smallest pricing band — talk to us for a figure.
1 bed · 1 bath
Footprint 15'-0" X 13'-10"
Kitchen, Bath, Living room, Bedroom
Junior ADU (JADU)
Junior ADUs
Carved out of the existing house, inside its current walls — usually the cheapest route to a second unit.
Junior ADU
How it compares to the other two.
You’re hereJunior ADUCarved out inside the existing house
Attached ADUShares at least one wall with the homeOpen
Detached ADUA standalone building in the yardOpenPlans that fit
What this looks like on paper.
Every layout here is 500 sq ft or under — inside the statutory Junior ADU ceiling.Gov. Code §66313
On site
Converting a garage into living space
Rules that apply.
Limits vary by jurisdiction. These are the levers that decide what fits on your lot — we confirm every one of them against your city before design starts.
- Maximum size500 sq ft of interior livable spaceGov. Code §66313
- Must beContained entirely within the single-family residenceGov. Code §66313
All the rules that apply, with citations
- Owner occupancyRequired only where sanitation is shared with the houseGov. Code §66333
- No owner occupancyIf the unit has its own sanitation facilitiesGov. Code §66333
These are California state minimums — the floor every city has to allow. Your jurisdiction may permit more, and applies its own setbacks, height and design rules on top. We confirm all of it against your address before design starts. See regulations by city. Statutes reviewed 4 August 2026.
Is this you? When this is the right call
You have a spare bedroom or interior space you can convert.
You want the lowest-cost path to a rentable unit.
You are willing to meet owner-occupancy requirements.
Feasibility → design → permit → build — the same four steps as every project we run. See how the process works.
Start with a free consultation.
Under an hour, no pressure — we talk through what your lot allows and give you a ballpark for your property. No charge, and no obligation to go further.